LAPSE:2020.1007
Published Article
LAPSE:2020.1007
Characterization of Licorice Root Waste for Prospective Use as Filler in more Eco-Friendly Composite Materials
Carlo Santulli, Marco Rallini, Debora Puglia, Serena Gabrielli, Luigi Torre, Enrico Marcantoni
September 23, 2020
The extraction of glycyrrhizin from licorice root and stolon with ethanol/water solutions leaves a lignocellulosic residue, which could be potentially applied in biocomposites. This process proved difficult in principle, given the considerable hardness of this material as received, which impedes its use in polymer resins in large amounts. After ball milling, up to 10% of this fibrous residue, which shows very variable aspect ratio, was introduced into an epoxy matrix, to investigate its possible future application in sustainable polymers. Of the three composites investigated, containing 1, 5 and 10 wt% of licorice waste, respectively, by performing flexural testing, it was found that the introduction of an intermediate amount of filler proved the most suitable for possible development. Thermal characterization by thermogravimetry (TGA) did not indicate large variation of degradation properties due to the introduction of the filler. Despite the preliminary characteristics of this study, an acceptable resin-filler interface has been obtained for all filler contents. Issues to be solved in future study would be the possibility to include a larger amount of filler by better compatibilization and a more uniform distribution of the filler, considering their orientation, since most of it maintains an elongated geometry after ball milling.
Keywords
filler morphology, licorice waste, lignin-based composite, mechanical characterization, thermal characterization
Suggested Citation
Santulli C, Rallini M, Puglia D, Gabrielli S, Torre L, Marcantoni E. Characterization of Licorice Root Waste for Prospective Use as Filler in more Eco-Friendly Composite Materials. (2020). LAPSE:2020.1007
Author Affiliations
Santulli C: Geology Division, School of Science and Technology, Università di Camerino, via Gentile III da Varano, 7, 62032 Camerino, Italy [ORCID]
Rallini M: Department of Civil and Environmental Engineering, Università di Perugia, Strada di Pentima, 4, 05100 Terni, Italy
Puglia D: Department of Civil and Environmental Engineering, Università di Perugia, Strada di Pentima, 4, 05100 Terni, Italy [ORCID]
Gabrielli S: Chemistry Division, School of Science and Technology, Università di Camerino, via Madonna delle Carceri, 62032 Camerino, Italy
Torre L: Department of Civil and Environmental Engineering, Università di Perugia, Strada di Pentima, 4, 05100 Terni, Italy
Marcantoni E: Chemistry Division, School of Science and Technology, Università di Camerino, via Madonna delle Carceri, 62032 Camerino, Italy [ORCID]
Journal Name
Processes
Volume
8
Issue
6
Article Number
E733
Year
2020
Publication Date
2020-06-24
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8060733, Publication Type: Journal Article
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LAPSE:2020.1007
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doi:10.3390/pr8060733
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Sep 23, 2020
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Sep 23, 2020
 
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Original Submitter
Calvin Tsay
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